OSI Model Flashcards
OSI Model: Route Determination
network layer
OSI Model: Flow control
transport layer
OSI Model: Interface to transmission media
physical layer
OSI Model: Provides access for the end user
application layer
OSI Model: Format and code conversion services
presentation layer
OSI Model: Establishes, manages and terminates sessions
session layer
OSI Model: Ensures reliable transmission of data
transport layer
OSI Model: Log-in and log-out procedures
session layer
OSI Model: Provides independence from differences in data representation
presentation layer
OSI Model: Reliable process to process message delivery
transport layer
OSI Model: Route selection
network layer
OSI Model: Defines frames
data link layer
OSI Model: Provides user services such as e-mail and file transfer
application layer
OSI Model: Transmission of bit stream across physical medium
physical layer
OSI Model: Communicates directly with user’s application program
application layer
OSI Model: Error correction and retransmission
data link layer
OSI Model: Mechanical, electrical, and functional interface
physical layer
OSI Model: Responsibility for carrying frames between adjacent nodes
data link layer
Why was the OSI model developed?
Standards were needed to allow any two systems to communicate
Standards were needed to allow any two systems to communicate
network
The _______ layer lies between the network layer and the application layer.
transport
The ______ layer is responsible for the source-to-destination delivery of a packet across multiple network links.
network
In the OSI model, as a data packet moves from the lower to the upper layers, headers are
removed
Mail services are available to network users through the _______ layer.
application
The _________ layer enables the users to access the network.
application
In the OSI model, encryption and decryption are functions of the ________ layer.
presentation
The _______ layer ensures interoperability between communicating devices through transformation of data into a mutually agreed upon format.
presentation
When data are transmitted from device A to device B, the header from A’s layer 4 is read by B’s _______ layer.
transport
The physical layer is concerned with the movement of _______ over the physical medium
bits
Layer 2 lies between the physical layer and the _______ layer.
network
The ________ layer is responsible for the process-to-process delivery of the entire message.
transport
The _______ model shows how the network functions of a computer ought to be organized.
OSI
As the data packet moves from the upper to the lower layers, headers are _______.
added
The _______ layer is responsible for delivering data units from one station to the next without errors.
data link
The ______ layer is responsible for moving frames from one hop (node) to the next.
data link
The _______ layer is the layer closest to the transmission medium.
physical
The seven-layer _______ model provides guidelines for the development of universally compatible networking protocols.
OSI
The process-to-process delivery of the entire message is the responsibility of the _______ layer.
transport
